Synthesis of Conducting Bifunctional Polyaniline@Mn-TiO2 Nanocomposites for Supercapacitor Electrode and Visible Light Driven Photocatalysis

Poudel, Milan Babu; Yu, Chang-Ho; Kim, Han Joo

doi:10.3390/catal10050546

Cited by 84 publications

(31 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…C e (mg/L) and q e denotes the equilibrium concentration and the equilibrium adsorption capacity, respectively. The removal efficiency (RE%) was calculated by the following equation [35,48]:…”

Section: The Adsorption Of Mb On Rgomentioning

confidence: 99%

Lemon Juice Assisted Green Synthesis of Reduced Graphene Oxide and Its Application for Adsorption of Methylene Blue

Mahiuddin

Ochiai

2021

Technologies

View full text Add to dashboard Cite

Sustainable synthesis of reduced graphene oxide (rGO) is of crucial significance within the development of carbon nanomaterials. In this study, a green and eco-friendly strategy for the synthesis of rGO using lemon juice as the reducing agent for graphene oxide (GO) without using toxic and harmful chemicals was demonstrated. The reduction with lemon juice effectively eliminated the oxygen-containing functionalities of GO and regenerated the conjugated systems as confirmed by the UV-vis and FTIR spectroscopic and X-ray diffraction analyses. Microscopic evaluation showed the successful manufacturing of exfoliated and separated few layers of nano-sheets of rGO. The application of the resultant rGO as an adsorbent for organic pollutants was investigated using methylene blue (MB) as a model. The adsorption kinetics of MB on rGO is best matched with the pseudo-second-ordered kinetic model and the Langmuir model with a high adsorption capacity of 132.2 mg/g. The rGO exhibited good reusability with a removal efficiency of 80.4% in the fourth cycle. This green method provides a new prospect for the large-scale production of rGO in a cost-effective and safe manner.

show abstract

Section: The Adsorption Of Mb On Rgomentioning

confidence: 99%

Lemon Juice Assisted Green Synthesis of Reduced Graphene Oxide and Its Application for Adsorption of Methylene Blue

Mahiuddin

Ochiai

2021

Technologies

View full text Add to dashboard Cite

show abstract

“…In order to respond to this issue, there are a lot of researchers employ technology for coating or doping TiO 2 with metallic or non-metallic such as Ag, Cu, Fe, SiO 2 , and ZnO 2 for preventing rapid recombination of electron and hole, thereby improving the quantum efficiency. Hence, the photocatalytic and antibacterial activity of TiO 2 can enhance by designing and realizing hybrid nanostructured materials or nanocomposites formed of two or more components (Devi et al, 2020;Ilaria et al, 2020;Luis et al, 2020;Milan et al, 2020). Previous studies on mesoporous silica nanospheres and nanotubes functionalized with titanium dioxide have demonstrated strong enhancement of titanium dioxide photocatalytic performance (Sikora et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Synthesizing and Evaluating the Photocatalytic and Antibacterial Ability of TiO2/SiO2 Nanocomposite for Silicate Coating

Thi

et al. 2021

Front. Chem.

View full text Add to dashboard Cite

The TiO2/SiO2 nanocomposite has been synthesized by a sol-gel method and investigated the effect of the SiO2 content (0, 5, 10, 15, 20, and 50%) on the rutile-to-anatase phase transition of TiO2 NPs. In order to increase the photocatalytic efficiency of the nanocomposite and decrease the price of material, the TiO2/SiO2 Nc with content SiO2 of 15% sample is chosen for preparing silicate coating. The efficiency of photocatalytic MB and antibacterial ability in the air of W silicate coating (adding TiO2/SiO2 Nc (15%)) achieve almost 100% for 60 h and 94.35% for 3 h, respectively. While the efficiency of photocatalytic MB and antibacterial ability of WO silicate coating (adding commercial TiO2/SiO2) is about 25–30% for 60 h and 6.02% for 3 h, respectively. The presence of TiO2/SiO2 Nc (15%) with a larger surface area in W silicate coating can provide increased centers for absorption, photocatalytic reaction, and the contact between sample and bacteria lead to enhance the photocatalytic and antibacterial ability of W silicate coating.

show abstract

“…17 The main materials used as pseudocapacitor electrodes are transition metal oxides, 18,19 transition metal dichalcogenides (TMDs), 20 conducting polymers (CPs), 21 and their related composites. 22 Furthermore, when supercapacitors are based on electrodes with materials combining both EDLC and pseudocapacitance, they are regarded as hybrid. 23,24 Among a broad variety of CPs considered for application in supercapacitors, poly (3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT:PSS) stands out.…”

Section: Introductionmentioning

confidence: 99%

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

2021

View full text Add to dashboard Cite

Here we present the study of supercapacitors based on molybdenum disulfide and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (MoS 2 /PEDOT: PSS) composite electrodes deposited by spray-coating. To produce the MoS 2 / PEDOT:PSS composite ink, dispersions of hydrothermally synthesized MoS 2 and PEDOT:PSS were mixed in different weight proportions. Electrodes containing only PEDOT:PSS and MoS 2 were also fabricated for comparison. The composite films were deposited by transferring the as-prepared inks to an airbrush coupled to a modified 3D printer base with in-line displacement. The films were characterized in terms of the scanning electron microscope (SEM), Raman spectroscopy, and sheet resistance. The electrochemical properties of supercapacitors were evaluated by cyclic voltammetry (CV), galvanostatic charge/discharges (GCD) techniques, impedance spectroscopy (IS), and their correlated parameters. The maximum specific capacitance of the MoS 2 -basedsupercapacitor was estimated to be 145.9 F g −1 at 1 mV s −1 , while the 3:1 MoS 2 /PEDOT:PSS weight ratio supercapacitor exhibited a specific capacitance of 131.1 F g −1 . Despite the slightly lower C SP , the 3:1 device provided a better overall performance, with a remarkably higher energy density of 11.2 Wh kg −1 and a maximum power density of 1020 W kg −1 . It also displayed better longterm cycle stability, retaining 92% of its initial capacitance after 1000 CV cycles (against 54% of MoS 2 devices). In summary, we demonstrated the study and production of a high-performance supercapacitor with spray-deposited MoS 2 / PEDOT:PSS composite electrodes, in which the production can be easily scalable for mass production and practical applications.

show abstract

Synthesis of Conducting Bifunctional Polyaniline@Mn-TiO2 Nanocomposites for Supercapacitor Electrode and Visible Light Driven Photocatalysis

Cited by 84 publications

References 42 publications

Lemon Juice Assisted Green Synthesis of Reduced Graphene Oxide and Its Application for Adsorption of Methylene Blue

Lemon Juice Assisted Green Synthesis of Reduced Graphene Oxide and Its Application for Adsorption of Methylene Blue

Synthesizing and Evaluating the Photocatalytic and Antibacterial Ability of TiO2/SiO2 Nanocomposite for Silicate Coating

High‐performance symmetric supercapacitor based on molybdenum disulfide/poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) composite electrodes deposited by spray‐coating

Contact Info

Product

Resources

About